JP3099749B2 - Oil filter mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting an oil filter for an engine.

[0002]

2. Description of the Related Art A schematic configuration of a conventional oil filter mounting device for a truck diesel engine will be described with reference to a conceptual perspective view of FIG. 13 and a sectional view of FIG.
First, in the perspective view of FIG. 13, reference numeral 10 generally indicates a truck diesel engine, and the engine includes an engine body 16 including a crankcase 12 and an oil pan 14. A main oil gallery 18 is provided in the crankcase 12, and oil pumped by an oil pump 22 through an oil strainer 20 disposed in the oil pan 14 is provided in the main oil gallery 18. The foreign matters are removed by the feed 24 and supplied.

The oil filtered by the oil filter 24 and supplied to the main oil gallery 20 is supplied to the main oil gallery 20 through a number of branch oil passages 26, each of which requires lubrication of the engine 10, for example, a crankshaft or a camshaft bearing.
The oil supplied to the timing gear train, the sliding surface of the piston, etc., lubricates a large number of relative rotating parts and sliding parts, and cools the oil to the ori pan 14 again. The illustrated oil filter 24 has a built-in filter element in a casing with respect to a filter head 28 mounted with a plurality of mounting bolts on a receiving portion or a mounting seat provided at an appropriate position of the engine body, usually the crankcase 12. Is a so-called spin-on type oil filter configured to detachably attach a cartridge or canister.

An example of the structure of the oil filter 24 and the filter head 28 will be described with reference to a sectional view of FIG. The filter head 28 has a mounting surface 32, which is in oil-tight contact with a receiving portion or a mounting seat 30 provided at an appropriate position of the engine body 16 via a liquid gasket or a plate-like gasket, and an oil filter 24 which is detachable. A first outlet passage 36 communicating with the main oil gallery 18 and a second outlet passage 38 communicating with the oil pan 14 are provided. And an inlet passage 40 communicating with the discharge side of the oil pump 22. The inlet passage 40 and the second outlet passage 38 are respectively opened in the mounting surface 32,
The first oil passage 42 and the second oil passage 44 open to the receiving portion or the mounting seat 30 of the engine main body, respectively.
On the other hand, in the case of the drawing, the first outlet passage 36 is opened on the upper surface 46 substantially orthogonal to the mounting surface 32.

The oil filter 24 includes a cylindrical casing 48 having a bottom and a bypass element 50 having a filtering member such as a fine filter paper in the casing 48.
And a full flow element 52 having a filter member such as a relatively coarse filter paper are inserted coaxially, and a plastic end plate 54 is provided at an end of the bypass element 50 side. End plate 5
4 is provided with a female screw portion 56 screwed to the mounting screw member 34, and a plurality of oil passage holes communicating with the inlet passage 40 are provided at a radially outer portion of the female screw portion 56. 58 are provided.

In FIG. 14, reference numeral 60 denotes a relief which is automatically opened when the oil pressure in the casing 48 rises abnormally due to the clogging of the full flow element 52 and the oil flows directly to the first outlet passage 36. The valve 62 is disposed concentrically within the mounting screw member 34 with a gap 64 serving as an oil passage, and the first outlet passage 36
, A central pipe member forming part of
Numeral 8 is a rubber packing having a truncated conical shape.

[0007] The oil discharged from the oil pump 22 is supplied to a first portion provided in a receiving portion 30 of the engine body 16.
The oil flows from the opening of the oil passage 42 into the inlet passage 40 opened to the mounting surface 32 of the opposite filter head 28, passes through a plurality of oil holes 58 provided in the end plate 54 of the oil filter 24, and enters the casing 48. Flows to Most of the oil that has flowed into the casing 48 passes from the outer periphery of the full flow element 52 having a coarse mesh and a small flow resistance, passes through the filter member of the element, and removes foreign substances having a relatively large particle diameter. It flows through the one outlet passage 36 to the main oil gallery 18 in the engine body.

On the other hand, a small amount of the remaining oil passes through the bypass element 50 having a small flow resistance and has a large flow resistance, and fine particles having a small particle diameter are removed, and the oil between the central pipe member 62 and the mounting screw member 34 is removed. Flows through a passage or gap 64 into a second outlet passage 38 in the filter head 28;
Further, the oil returns to the oil pan 14 through the receiving portion of the engine body or the second passage 44 in the mounting seat 30.

On the other hand, the basic structure of a diesel engine for a vehicle such as a truck is substantially the same, but a number of series engines having different specifications are manufactured depending on the presence or difference of accessories and accessories such as a turbocharger. It is customary. In this case, due to differences in mounting positions and sizes of accessories and accessories attached to the engine body such as the crankcase 12 and other restrictions on the layout of the engine, or
Even if the engine has the same specifications, the oil filter
If the oil filter 24 is not changed in direction from a certain basic mounting position, it may interfere with other engine parts or vehicle body-side parts, or even if it does not interfere, it becomes extremely difficult to replace the oil filter 24. Often occur.

However, as described above, the first and second outlet passages 36 and 44 and the inlet passage 40 of the filter head 28 must be connected to the oil passage on the engine body side, respectively.
Changing the mounting angle of the filter head with respect to the receiving portion or the mounting seat 30 of the engine body in order to change the position of the filter head 4 to a preferable position that does not interfere with other engine parts or vehicle body parts is the same as the conventional configuration. In practice, this is not possible, and at least one of the receiving part or the mounting seat 30 and the filter head 28 of the engine body must be changed to a structure different by the desired number of oil filter positions. However, such a change in the structure of the receiving portion on the engine body side and a change in the structure of the filter head 28, of course, cause a problem that the manufacturing cost of the engine is significantly increased.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a receiving portion or a seat for mounting a filter head on the engine body side, and a filter head on which an oil filter is detachably mounted. In any case, without making structural changes that cause a significant increase in manufacturing costs,
The mounting angle of the oil filter with respect to the engine body can be changed, resulting in interference with other parts mounted on the outside of the engine body in series engines of various specifications with different accessories and equipment. Or an inexpensive oil filter that can easily avoid interference with vehicle-body-side components arranged around the engine, and can effectively prevent deterioration of the workability of attaching and detaching the oil filter even without interference. The main purpose is to provide a mounting device.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an oil filter for filtering oil lubricated at various parts of an engine, an oil filter attached to an engine body, and the engine body and the oil filter. A filter head having an inlet passage and an outlet passage that communicates with the filter head, and a receiving portion of the engine body having the first and second oil passages to which the filter head is attached and communicated with the inlet passage and the outlet passage, respectively. Wherein the filter head is formed to be mountable to the receiving portion of the engine body at at least two different angular positions around a rotation axis perpendicular to a mounting surface cooperating with both. In addition, the inlet surface of the filter head, the first oil passage opening of the receiving portion, and the An oil filter mounting device, characterized in that at least one communication passage extending along the mounting surface is provided for communicating the outlet passage of the filter head and the second oil passage opening of the receiving portion with each other. It is a suggestion.

[0013]

Further, in the present invention, the engine book
Either the first oil passage or the second oil passage of the body receiving portion
One opening is disposed concentrically with respect to the rotation axis.
And the communication path includes the first oil path and the second oil path.
Either the other opening of the oil passage and the filter head
Inlet or outlet passage cooperating with the other opening in the door.
It is preferable to connect the road with the road.
Center the rotation axis on the mounting surface of the luta head on the engine side.
Bolt holes are provided at each vertex of the regular polygon.
And the engine to which the filter head is attached
Into the bolt hole of the filter head
Cooperating bolts capable of receiving threaded mounting bolts
It is preferable that a tilt hole is provided.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. (Note that members and portions substantially the same as or corresponding to those of the conventional oil filter mounting device described with reference to FIGS. 13 and 14 are denoted by the same reference numerals, and redundant description will be omitted.) In the first embodiment shown in FIGS. 1 to 6, a plurality of mounting bolts 70 (only the center line is shown in FIG. 1) is provided on a receiving portion or mounting seat 30 provided at an appropriate position of the crankcase 12 included in the engine body 16. Are shown) in the filter head 28 mounted by the inlet passage 4.
0 and a first outlet passage 36 and a second outlet passage 40 are provided. The inlet passage 40 is provided in a receiving portion on the engine body side or in a first oil passage 40 which is open to an end surface of the mounting seat 30 or the mounting surface 30 ′. In addition to the communication, the second outlet passage 40 communicates with a second oil passage that opens to the mounting surface 30 ′ of the receiving portion 30. As in the conventional oil filter mounting device, the first oil passage 42 is connected to the discharge side of the oil pump 22 and the second oil passage 44 communicates with the oil pan 14 so that the oil filter 24 is connected to the bypass element 50.
A small amount of oil that has passed through is returned to the oil pan 14,
Further, the first outlet passage 36 is connected to the oil filter 24.
The oil that has passed through the internal full flow element 52 is supplied to the main gallery 18 of the engine 10 via an appropriate passage such as a pipe or a hose.

As shown in the schematic front view of FIG. 2, the center of each of the mounting flanges 72 of the filter head 28 which is tightly fixed to the receiving portion 30 on the engine body 16 side by the mounting bolt 70 is provided. Four bolt holes 74 are formed at the apexes of the square, and these bolt holes 74 receive the mounting bolts 70. Bolt hole 7
4 of the center is disposed on a circle centered on the center O ₁ of the opening of the inlet passage 40 in the engine body side of the mounting surface 32 of the mounting flange 72, in other words, the center of the square is the coincides with the center O ₁ of the opening of the inlet passage 40.

The mounting surface 32 of the mounting flange 72 is provided.
The, from the center O _1, the distance R ₁ which leads to the center O ₂ of the opening of the second outlet passage 38 in the mounting surface 32 and the radius, consisting arcuate groove centered on the center O ₁ A communication passage 76 is provided. The communication passage 76 includes the opening of the second outlet passage 38 and is formed over a circumferential angle of 90 degrees or slightly larger. On the other hand, in the receiving portion 30 on the engine body 16 side, the center of the opening in the mounting surface 30 ′ of the first oil passage 42 is centered,
A bolt hole 78 having the same diameter is disposed at a position corresponding to each vertex of the square which is substantially the same as the square where the center of the bolt hole 74 is located. Therefore, the bolt hole 7
4 and 78 can be aligned and a common mounting bolt 70 is inserted into both bolt holes 74 and 78. In addition, the front shape of the mounting surface 32 on the filter head 28 side may be a square as shown in FIG. 2, but may be a circle, an ellipse, or any other shape.
Similarly, the cooperating mounting surface 30 'of the engine body side receiving portion 30 can be formed in a square, a circle, an ellipse or any other shape.

[0018] Figure 2, the center line _{O f} of the oil filter 24
~ O _f is the said inlet passage of the mounting surface 32 of the 40 with the center O ₁ of the opening perpendicular vertical plane to the plane of the street view and the center O ₂ of the opening in the mounting surface 32 of the second outlet passage 38 The figure shows a state in which it is mounted on the included first mounting device. FIG. 3 shows an example in which the oil filter 24 is rotated 90 degrees clockwise from the first mounting position in order to avoid interference with other engine parts (for example, accessories or accessories) in a series engine having different specifications. Fig. 4 shows an aspect in which they are attached by being attached.

In this case, the filter head 28 is rotated clockwise by 90 degrees from the first position in FIG. 2 so that the bolt holes 78 of the receiving portion 30 of the engine body and the bolt holes 74 of the filter head 28 are aligned. Thereafter, the mounting bolt 70 is inserted into each of the bolt holes 74 and 78 and tightened. The first oil passage 42 and the filter head 28 side of the inlet passage 40 of the engine body receiving portion 30, since it is arranged to have the same center O ₁ in the mounting surface 30 'and the 32 cooperating, as the mounting surface of the center _{O 1} 2 3
The first oil passage 42 and the inlet passage 40 are in direct communication even when the filter head 28 is rotated as described above around a rotation axis perpendicular to 0 'and 32 (hereinafter referred to as OO). On the other hand, the second
The oil passage 44 is located at the other end of the communication passage 76 at a distance of 90 degrees from the central angle, and the second outlet passage 38 and the second oil passage 44 communicate with each other via the communication passage 76. In addition,
2, by forming an arcuate radius R over at least 90 degrees or more central angle a communication passage 76 on the left side of the center O _2, counterclockwise the filter head 28 around the rotational axis O-O By rotating the oil filter 24 by 90 degrees in the direction, the oil filter 24 can be positioned on the opposite side as shown by a dashed line in FIG. 3 to avoid interference with other engine parts. Prior to the insertion of the mounting bolts 70, oil tightness can be maintained by applying a liquid gasket between the mounting surface 30 'of the receiving portion 30 and the mounting surface 32 of the filter head 28.

According to the above configuration, the filter head 28 is simply moved around the rotation axis OO without making any change or modification to the bolt hole 78 of the receiving portion 30 of the engine body and the bolt hole 74 of the filter head 28. Rotate to
By tightening the mounting bolt 70 at the desired rotation angle position, interference with other engine parts can be avoided, and it is possible to cope with various types of series engines. Similarly, interference with the body side parts can be avoided. Therefore, the processing position of the bolt hole 78 of the receiving portion 30 or the filter head 2
8 compared with the case where the position of the bolt hole 74 is variously changed.
The manufacturing cost of the engine can be significantly reduced.

FIG. 5 shows a modification of the first embodiment. In this case, the arc-shaped communication passage 76 is provided not on the filter head 28 side but on the contact surface 30 of the receiving portion 30 on the engine body side. ′. FIG. 6 similarly shows still another modification of the first embodiment. In this modification, the mounting surface 32 of the filter head 28 and the mounting surface 30 ′ of the engine body side receiving portion 30 are different from each other. A plate-like gasket or spacer 80 is interposed between the gasket or spacer 80. The gasket or spacer 80 has a through hole that forms an arc-shaped communication passage 76 that allows the second outlet passage 38 and the second oil passage 44 to communicate with each other. Is provided. 5 and 6 are partial cross-sectional views corresponding to FIG. 4, each showing a cross section taken along line IV-IV in FIG. It is obvious, without further explanation, that the modified examples shown in FIG. 5 and FIG. 6 can also provide substantially the same operation and effect as the operation and effect described in the first embodiment. .

Next, a second embodiment of the present invention will be described with reference to FIGS. The difference between the second embodiment and the first embodiment is as follows.
In the mounting flange 72, four bolt holes 74 arranged so as to have centers at the vertices of the regular square are provided on the mounting surface 3.
Rather than the center _{O 1} of the opening of the inlet passage 40 in the 2,
It is disposed on a circumference around the center O ₂ and the center O ₁ and O ₁ -O ₂ substantially central point O ₃ of the line connecting the openings of the second outlet passage 38 in the mounting surface 32 it and, in the mounting surface 32, the communication passage 76 consisting of arc-shaped groove of the center O ₃ radius R ₁ centered on _(equal to the length of a line connecting the said center O ₃ and the center O ₂₎ together are formed extending from the opening in the counter-clockwise direction for 90 degrees or even more slightly larger circumferential angle of the second outlet passage 38, the radius R _{2 (the} center O ₃ around the aforementioned center O ₃ And the center O ₁
The communication path 82 is formed of an arc-shaped groove (equal to the length of a line connecting the two) to the receiving portion or the mounting seat 30 on the engine body side in substantially the same manner as in FIG. , Bolt holes 7 of the same diameter which are respectively aligned with the four bolt holes 74.
8 and a first oil passage 42 opening at the mounting surface 30 ′ of the receiving portion 30 in alignment with the opening of the inlet passage 40 at the angular position of the filter head 28 shown in FIG. Second oil passages 44 are provided on the mounting surface 30 'so as to be aligned with the openings of the second outlet passages 38, respectively. As shown, the communication passage 76 has a groove width substantially equal to the diameter of the opening of the second outlet passage 38, and similarly, the communication passage 8
Preferably, 2 has a groove width substantially equal to the diameter of the opening of the inlet passage 40.

[0023] In the above structure, from the position shown in FIG. 7, the filter head 28, passes through the center _{O 3,} about a vertical axis of rotation O-O to the mounting surface 32 and 30 '90
By rotating the oil filter 24 clockwise and inserting the mounting bolts 70 into the bolt holes 74 and 78 and tightening the oil filter 24, the oil filter 24 is positioned at a 90-degree rotated angular position as shown in FIG. This has the advantage that interference with equipment parts of other series engines having different specifications or interference with body parts can be avoided, or the workability of attaching and detaching the oil filter 24 can be improved. In order to avoid interference with other components or to prevent deterioration of the workability of attachment / detachment, the positions where the bolt holes 78 of the engine body side receiving portion 30 are drilled, It is apparent that the manufacturing cost can be greatly reduced as compared with the case where the arrangement of the 28 bolt holes 74 is individually changed.

In the second embodiment, as in FIGS. 5 and 6, the communication passages 76 and 82 may be provided on the mounting surface 30 'of the receiving portion 30 of the engine body. When a plate-like gasket 80 is interposed between the surface 30 ′ and the mounting surface 32, the gasket 80 may be provided with communication passages 76 and 82 including arc-shaped through holes.
Further, the filter head 28 is fixed to the receiving portion 30 on the engine body side in common with the first and second embodiments.
Normally, three mounting bolts 70 are sufficient, and the oil pressure in the first oil passage 42 and the inlet passage 40 is 6 to 8 kg / cm ^{2 in} the case of a diesel engine such as a truck.
At a low pressure, the second outlet passage 38 and the second oil passage 4
Since the oil pressure of No. 4 is substantially atmospheric pressure, it is relatively easy to secure oil tightness. Therefore, it is not always necessary to always apply the four mounting bolts 70, and unless there is a problem in securing oil tightness, Mounting bolts 70 can also be applied to three of the four matching bolt holes 74, 78, where one unused bolt hole of the square arrangement is the filter head 28. Thus, the function of determining the rotation angle is achieved.

Next, a third embodiment of the present invention will be described with reference to FIGS. The third embodiment and the first
The difference from the embodiment is that, first, regarding the filter head 28, the mounting flange 72 is provided on the mounting surface 32 with three vertices of an equilateral triangle centered on the center O ₁ of the opening of the entrance passage 40. and the bolt hole 74 is provided, on the mounting surface 32, the center O ₁ around the second outlet passage 38 circumferentially from the openings slightly larger circumferential angle of 120 degrees or than in the counter-clockwise direction The communication path 76 is formed of an arc-shaped groove having a radius R ₁ (equal to the length of a line connecting the center O ₁ and the center O ₂ ) over the corner. On the other hand, in substantially the same manner as in FIG. 1, the receiving portion or the mounting seat 30 on the engine body side is provided with a bolt hole 78 aligned with the three bolt holes 74 and aligned with the opening of the inlet passage 40. Mounting surface 3 of the receiving part 30
A first oil passage 42 opening to 0 'and a second oil passage 44 opening to the mounting surface 30' in alignment with the opening of the second outlet passage 38 are provided. As shown in the figure, the communication passage 76 preferably has a groove width substantially equal to the diameter of the opening of the second outlet passage 38.

[0026] In the above structure, the angular position of the filter head 28 shown in FIG. 9, the same filter head 28, about a vertical axis of rotation O-O to the center _{O 1} as the mounting surface 72 and 32 '120 By inserting the mounting bolt 70 into the bolt holes 74 and 78 by rotating the oil filter 24 clockwise, and tightening the oil filter 24, the oil filter 24 can be arranged at the angular position rotated 120 degrees as shown in FIG. This has the advantage that interference with equipment parts of other series engines having different specifications or interference with vehicle body parts can be avoided, or the workability of attaching and detaching the oil filter 24 can be improved. As in the embodiment, there is an advantage that the manufacturing cost can be reduced. In the third embodiment as well, as in FIGS.
Can be provided on the mounting surface 30 ′ side of the receiving portion 30 of the engine body, and when a plate-like gasket 80 is interposed between the mounting surface 30 ′ and the mounting surface 32, the gasket 80 is circular. A communication path 76 including an arcuate through hole can be provided.

In the first to third embodiments, the mounting surface 32 of the filter head 28 to the engine body,
The end face 84 of the filter head 28 perpendicular to the center line _O f -O _f of the mounting surface or the oil filter of the oil filter 24
(See FIG. 1) are arranged substantially orthogonal to each other, but as shown in the schematic side view of FIG. 11, the mounting surface 32 and the mounting surface 84 are arbitrary. Can be provided to intersect at an angle θ, in which case also
As in the above embodiments, the bolt holes 74 and 78 for receiving the mounting bolts 70 are arranged so as to be located at the respective vertices of the regular polygon, and the communication passage 76 (the inlet passage 4) similar to the above.
0 and the first oil passage 42) and the communication passage 8
By providing 2 (communicating the second outlet passage 38 and the second oil passage 44), advantages and effects can be obtained in the same manner as in the above-described embodiments.

As shown in the schematic side view of FIG. 12, the mounting surface 32 of the filter head 28 on the engine body side and the mounting surface 84 of the oil filter 24 can be arranged substantially in parallel. . In this case, the rotation axis OO of the filter head 28, that is, the bolt holes 74 and 78 for receiving the mounting bolts 70 are arranged so as to be located at the respective vertices of the regular polygon, and the communication paths 76 and 78 similar to the above are formed. provided further center line _O f -O oil filter 24
_f and the rotation axis _OO of the filter head 28 are offset by a distance S as shown. Similarly to the above-described first to third embodiments, the filter head 28 is connected to the rotation axis O.
By rotating around −O, the position of the oil filter 24 changes due to the existence of the eccentric distance S.
Functions and effects substantially the same as those described above can be obtained. Further, the regular polygonal arrangement of the bolt holes 74 and 78 in the present invention is not limited to the regular square illustrated in the first and second embodiments and the regular triangle illustrated in the third embodiment. Of course, a regular hexagonal arrangement is also possible.
Further, for example, the arrangement of the bolt holes 74 of the filter head 28 is a regular hexagon, and the arrangement of the bolt holes 78 of the engine body side receiving portion 30 is a regular triangle (of course, located on the same circumference). The indexing rotation angle of 28 can be set to 60 degrees with respect to 120 degrees in the embodiment shown in FIGS. 9 and 10, so that finer angular position adjustment can be performed.

[0029]

As described above, the oil filter mounting device according to the present invention provides an oil filter for filtering oil lubricated to various parts of the engine, the oil filter mounted on the engine body, and the engine body and the oil filter. A filter head having an inlet passage and an outlet passage communicating with the filter, and a receiving portion of the engine body having the opening of the first and second oil passages to which the filter head is attached and respectively communicated with the inlet passage and the outlet passage. Wherein the filter head is configured to be mountable to the receiving portion of the engine body at at least two different angular positions around a rotation axis perpendicular to a mounting surface cooperating with the filter head. And an inlet passage for the filter head and a first oil passage opening of the receiving portion, At least one communication passage extending along the mounting surface is provided for communicating the outlet passage of the filter head and the second oil passage opening of the receiving portion with each other. By mounting at different rotation angle positions with respect to the engine side receiving part, interference between the oil filter and accessories and accessories attached to the engine, or interference with the vehicle body and its parts is avoided or If not, it is possible to prevent deterioration of the workability of attaching and detaching the oil filter, and there is an advantage that the manufacturing cost of the engine can be reduced.

[0030]

Further, in the present invention, one of the openings of the first oil passage and the second oil passage of the engine main body receiving portion is disposed concentrically with respect to the rotation axis and the communication passage is provided. Are the first oil passage and the second oil passage.
The other opening of the oil passage communicates with an inlet passage or an outlet passage cooperating with the other opening in the filter head, and an engine-side mounting surface of the filter head. A bolt hole disposed at each vertex of a regular polygon centered on the rotation axis, and a mounting portion inserted through the bolt hole of the filter head in a receiving portion of an engine body to which the filter head is mounted. By providing cooperating bolt holes capable of receiving bolts, the relative position of the filter head with respect to the engine body, and thus the position of the oil filter, without changing the design of the receiving part and the filter head on the engine body side. Can be easily changed as needed, which is extremely convenient.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a first embodiment of the present invention.

FIG. 2 is a front view as viewed from the direction of arrow II in FIG. 1;

FIG. 3 is a front view showing a mode in which the filter head and the oil filter assembly shown in FIG. 2 are attached by being rotated by 90 degrees.

FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a cross-sectional view of a modification showing an arrangement of a communication passage 76 different from that of FIG.

FIG. 6 is a cross-sectional view of yet another modification showing the arrangement of the communication passages 76 different from that of FIG.

FIG. 7 is a front view showing a second embodiment of the present invention.

FIG. 8 is a front view showing a mode in which the filter head and the oil filter assembly shown in FIG. 7 are mounted by being rotated by 90 degrees.

FIG. 9 is a front view showing a third embodiment of the present invention.

FIG. 10 is a front view showing a state in which the filter head and the oil filter assembly shown in FIG. 9 are attached by being rotated by 120 degrees.

FIG. 11 is a schematic side view of a filter head and an oil filter assembly to which the present invention is applied.

FIG. 12 is a schematic side view showing still another example of a filter head and an oil filter assembly to which the present invention is applied.

FIG. 13 is a perspective view of a main part showing a lubrication system in a general truck diesel engine.

FIG. 14 is a cross-sectional view of the filter head and the oil filter assembly in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Diesel engine for trucks, 12 ... Crankcase, 14 ... Oil pan, 16 ... Engine body, 18
... Main oil gallery, 20 ... Oil strainer, 2
2 oil pump, 24 oil filter, 28 filter head, 30 receiving part or mounting seat, 30 'mounting surface of receiving part, 32 mounting surface of filter head, 36 first
Outlet passage, 38 ... Second outlet passage, 40 ... Inlet passage, 48
... Casing, 50 ... Bypass element, 52 ... Full flow element, 70 ... Mounting bolt, 74 ... Bolt hole of filter head, 76 and 82 ... Communication passage, 78 ... Bolt hole of receiving part, 80 ... Gasket or spacer, 84 ...
The mounting surface of the oil filter.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F01M 11/03

Claims (3)

(57) [Claims] 1. An oil filter for filtering oil lubricated at various parts of an engine, a filter head having the oil filter attached to an engine body, and having an inlet passage and an outlet passage communicating the engine body with the oil filter. And a receiving portion of an engine body having first and second oil passage openings to which the filter head is attached and which communicates with the inlet passage and the outlet passage, respectively. The filter head is formed with respect to the receiving portion at at least two different angular positions around an axis of rotation perpendicular to the co-operating mounting surface, and the co-operating mounting surface is provided with the filter head. An inlet passage and a first oil passage opening of the receiving portion, and an outlet passage of the filter head and a second oil passage of the receiving portion. An oil filter mounting device, characterized in that at least one communication passage extending along the mounting surface is provided for communicating with the opening. 2. The first oil passage of the engine body receiving portion.
One of the opening of the passage and the second oil passage is
The communication path is provided concentrically with the axis of rotation and
Is any one of the first oil passage and the second oil passage.
Opening and the other opening in the filter head
Communication between the part and the cooperating entrance passage or exit passage
The oil filter mounting device according to claim 1, wherein: 3. The mounting surface of the filter head on the engine side.
At the vertices of a regular polygon centered on the rotation axis.
Bolt holes are provided and the filter head
At the receiving part of the engine body where the
Receiving the mounting bolts inserted into the bolt holes in the head
That cooperating bolt holes are provided
The oil filter according to claim 1 or 2, wherein
Mounting device